Plane



Mar h 20, 1934 E. T. STEVENS 1,951,452

PLANE Filed Sept. 19, 1932 ls l/ l/ INVENTOR.

Ea1 1 T. ETevens ATTORNEYS.

Patented Mar. 20, 1934 UNITED STATES PATENT OFFICE.

2 Claims.

This invention relates to planes employed in woodworking and the like. 7

The principal object of the invention is to provide a novel multiple-bitted plane which permits ready adjustment and replacement of the bits.

Another object is to provide a plane of this character which is adapted for use as a block plane or as a nosing plane.

Still another object is to provide a plane which may be adjusted to plane light or heavy in front, rear intermediate, as' well as evenly over its entire planing surface.

Another object is to provide a multiple-bitted plane which will not be apt to become clogged by shavings.

Other objects and advantages of this invention will be apparent during the course of the following detailed description, taken in connection with the accompanying drawing, forming a part of this specification and in which draw- 1ng:

Figure l is a side elevation of theimproved plane, a part being broken away to better illustrate a portion of the construction.

Figure 2 is a horizontal section on the line 2-2 of Figure 1.

Figure 3 is a bottom plan view of the improved plane.

Figure 4 is a transverse section substantially on the line 4-4 of Figure 1.

Figure 5 is a perspective view of one of the bits employed in the improved plane.

The improved plane, as shown in the accompanying drawing, wherein similar reference characters designate corresponding parts throughout is preferred that these bit holes be arranged as shown in Figure 3 so that the centers of each pair be offset with respect to the other pairs but that the centers of the rearward bit hole and the fourth bit hole 18 from the rear end 14 are on substantially the longitudinal medial line of the bottom. From Figure 3 it can also be seen that the most forward pair of bit holes 20 is spaced apart the Widest and that the third pair of bit holes 17 is spaced not quite so far apart as the bit holes 20 but farther apart than the other pairs 16 and 19. Thus "the bit holes form two V-shaped groups with theibit holes 15 and 18 forming the apex of each-group. Extendinginwardly from the side faces 21 and 22 of the bottom 10 are a plurality of screw threaded apertures 23 one communicating with each bit hole, as shown in Figure 2. The bottom 10 is also provided with suitable screw threaded sockets or their equivalent extending downwardly from the top thereof for aiding in securing a knob and handle to the bottom 10.

From the rear end 14 of the bottom 10 projects a conventional handle having a base plate 31 secured as by screws 32 to the bottom and projecting upwardly from the forward end 13 is a conventional knob 33 having a base plate 34 secured as by screws 35 to the bottom 10.

The bits employed are preferably cylindrical as shown in Figure 5 and comprise a plurality of bits 40 ground with their cutting edges 41 slanting downwardly from left to right when viewed from the forward face 42 of the bit and a, plurality of.

bits 43 ground with their cutting edges 44 slanting downwardly from right to left when viewed from the forward face 45 of the bit. Each forward face 42 and 45 is beveled as at 46 and each rear face as at 47, the bevels meeting, of course, at the cutting edges'41 and 44. It is preferred that the bits 40 and 43 project upwardly from the upper face of the bottom 10 for a short distance and extend downwardly with substantially one-half of their cutting edges below the flanges 11. The bits are arranged so that the cutting edges extend diagonally across the bottom and so that the innermost portion of each cutting edge of each bit in the holes 16, 1'7, 19 and 20 is nearest the longitudinal medial line of the bottom. The angle thus formed is substantially 45 to the longitudinal medial line and the cutting edges on one side of the bottom are parallel to each other edge of the other is parallel to the cutting edges of the bits on the other side of the bottom, all as shown in Figure 3. This arrangement is such that a plurality of cutting edges are arranged to embrace a wide portion of the groove 12 and steel.

with the longitudinal axes of the bits describing paths shown by dot and dash lines in Figure 3.

Separate means is provided to adjust each bit with respect to the angle of the cutting edges with reference to the longitudinal medial line of the bottom as well as the extent to which the cutting edge may project into the groove, and the separate means preferably comprises a separate set screw 50 for each bit, carried in the screw threaded apertures '23, the set screws having frustoconical ends, suitably rounded, to engage and hold the bits.

In the use of the plane, the proper bits comprising preferably five bits 40 and five bits 43 are inserted one into each aperture and arranged with their cutting edges as shown in Figure 3 and with all their cutting edgessuitably adjusted as to the like extent of their projecting into and out of the grooves 12. The set screws 50 are then.

tightened and the plane is ready for use as a block plane. Should one bit break, it may be easily and cheaply replaced without disturbing the others and should one or more bits wear down faster than the others at their cutting edges, they may be easily reground or replaced without disturbing the other bits. By varying the adjustment of certain of the bits with respect to the extent they project into or out of the groove, the plane may be employed as a nosing plane or'so that the device will plane light or heavy in front, rear or intermediate. The individual bits are relatively inexpensive as compared with an ordinary bit or cutter of similar material, such as tool As for the plane itself, it can be seen that it can be easily and inexpensively fashioned from an elongate block of machine steel or similar material.

Used as a plane for dressing the marred surfaces of cutting blocks employed in the cutting of leather for shoes or of meat blocks, the plane will reduce the marred surface to one which, while not smooth as is generally a'planed board, or the like, will afford a surface having a plurality of minute grooves or hair lines, which may cross each other atvarious angles.

Various changes may be made to theform of invention herein shown and described, without departing from the spirit of the invention or the scope of the following claims.

What is claimed is:

1. In a plane for dressing meat blocks and the like, an elongated body portion having a substantially horizontal lower face provided with a pair of narrow flanges depending from said lower face and extending along the side edges of the body portion throughout the length of the same, the height of each of said flanges being substantially the same, said body portion also being provided with a plurality of spaced apart bit bores extending from the top of said body portion to said lower face, with the axes of all of said bores inclined from the vertical and in substantial parallelism and all of said axes inclined at the same angle with respect to said lower face.

2. In a plane for dressing meat blocks and the like, an elongated body portion having a substantially horizontal lower face provided with a pair of narrow flanges depending from said lower face and extending along the side edges of the body portion throughout the length of the same, the height of each of said flanges being substantially the same and the entire inwardly facing surfaces of the said flanges being at substantially the same distance from the longitudinal medial line of the body portion, said body portion also being provided with a plurality of spaced apart bit bores extending from the top of said body portion to said lower face, with the axes of all of said bores inclined from the vertical and in substantial parallelism and all of said axes inclined at the same angle with respect to said lower face, said bores spaced inwardly from the said inwardly facing surfaces of said flanges, providing a space between the lower mouths of all of said bores and the said surfaces, whereby a pair of channels are provided to either side of the cutting zone of said plane and said flanges forthe free passage of shavings and the like.

' EALY T. STEVENS. 

